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https://www.readbyqxmd.com/read/28627036/validation-of-masks-for-determination-of-v%C3%AC-o2-max-in-horses-exercising-at-high-intensity
#1
R H Sides, R Kirkpatrick, E Renner, K Gough, L M Katz, D L Evans, W M Bayly
BACKGROUND: The need for a horse to be ridden while wearing a measurement device that allows unrestricted ventilation and gas exchange has hampered accurate measurement of its maximal oxygen consumption (V̇O2 max) under field conditions. OBJECTIVES: Design and validate a facemask with the potential to accurately measure V̇O2 max in the field. STUDY DESIGN: Experiment with 6 x 6 Latin square design. METHODS: Two variations of a mask and associated electronic control module (ECM) were designed to enable breath-by-breath measurement of airflows through two 7...
June 19, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28622248/quantitative-perfusion-analysis-of-the-rectum-using-golden-angle-radial-sparse-parallel-magnetic-resonance-imaging-initial-experience-and-comparison-to-time-resolved-angiography-with-interleaved-stochastic-trajectories
#2
Ulrike I Attenberger, Jing Liu, Philipp Riffel, Johannes Budjan, Robert Grimm, Kai T Block, Stefan O Schoenberg, Xiaoying Wang, Daniel Hausmann
OBJECTIVES: Purpose of this study was to compare the quality of perfusion maps obtained from prototypical free-breathing magnetic resonance imaging (MRI) with continuous golden-angle radial sampling and iterative reconstruction (GRASP) to conventional acquisition using time-resolved angiography with interleaved stochastic trajectories (TWIST) in patients with rectal cancer. MATERIAL AND METHODS: Forty cases were included for retrospective analysis. Twenty of the patients received routine multiparametric MRI at 3 T for rectal cancer staging, including perfusion measurement with GRASP or TWIST (10 patients for each technique, including 5 prechemoradiation and 5 postchemoradiation)...
June 16, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28575566/-adaptation-to-intermittent-hypoxia-hyperoxia-improves-cognitive-performance-and-exercise-tolerance-in-elderly
#3
U Bayer, O S Glazachev, R Likar, M Burtscher, W Kofler, G Pinter, H Stettner, S Demschar, B Trummer, S Neuwersch
For improvements in exercise tolerance and cognitive function in geriatric patients Multimodal training programs (MTP) are used as combination of physiotherapy, occupational therapy and cardiovascular training. Intermittent Hypoxic-Hyperoxic Training (IHHT), a modified type of intermittent hypoxic training (IHT) is proposed to be included in MTP to elicit more pronounced beneficial effects in exercise tolerance and cognitive functions of geriatric patients likely by an additional pathway than a single MTP. Thirty four patients of the Geriatric Day Clinic aged between 64 and 92 years participated in the placebo controlled clinical trial...
2017: Advances in Gerontology, Uspekhi Gerontologii
https://www.readbyqxmd.com/read/28569242/-13-c-isotopic-abundances-in-natural-nutrients-a-newly-formulated-test-meal-for-non-invasive-diagnosis-of-type-2-diabetes
#4
Chiranjit Ghosh, Santanu Mandal, Mithun Pal, Prabuddha Mukhopadhyay, Shibendu Ghosh, Manik Pradhan
A new method to replace commercially prepared (13)C-labelled glucose with naturally available (13)C-enriched substrates could result in promotion of the clinical applicability of the isotopic breath test for detection of type 2 diabetes (T2D). Variation of the carbon-13 isotope in human breath depends on the (13)C enrichment in the diet taken by subjects. Here, we formulated a new test meal comprising naturally available (13)C-enriched foods and subsequently administered it to non-diabetic control (NDC) subjects and those with T2D...
June 1, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28534875/dose-dependent-social-cognitive-effects-of-intranasal-oxytocin-delivered-with-novel-breath-powered-device-in-adults-with-autism-spectrum-disorder-a-randomized-placebo-controlled-double-blind-crossover-trial
#5
D S Quintana, L T Westlye, S Hope, T Nærland, T Elvsåshagen, E Dørum, Ø Rustan, M Valstad, L Rezvaya, H Lishaugen, E Stensønes, S Yaqub, K T Smerud, R A Mahmoud, P G Djupesland, O A Andreassen
The neuropeptide oxytocin has shown promise as a treatment for symptoms of autism spectrum disorders (ASD). However, clinical research progress has been hampered by a poor understanding of oxytocin's dose-response and sub-optimal intranasal delivery methods. We examined two doses of oxytocin delivered using a novel Breath Powered intranasal delivery device designed to improve direct nose-to-brain activity in a double-blind, crossover, randomized, placebo-controlled trial. In a randomized sequence of single-dose sessions, 17 male adults with ASD received 8 international units (IU) oxytocin, 24IU oxytocin or placebo followed by four social-cognitive tasks...
May 23, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28440225/observation-of-nonanoic-acid-and-aldehydes-in-exhaled-breath-of-patients-with-lung-cancer
#6
L Callol-Sanchez, M A Munoz-Lucas, O Gomez-Martin, J A Maldonado-Sanz, C Civera-Tejuca, C Gutierrez-Ortega, G Rodriguez-Trigo, J Jareno-Esteban
Lung cancer (LC) is the leading cause of cancer death in men and the second leading cause in women worldwide. The use of low-dose computed tomography in early diagnosis was shown to reduce mortality by 20% with a median follow-up time of 6.5 years. In order to increase profitability and reduce radiation risks and costs, exhaled biomarkers could serve to help establish narrower inclusion criteria. The aim of this study was to identify new, well-founded volatile organic compounds in exhaled breath which distinguish LC patients from chronic obstructive pulmonary disease (COPD) patients and healthy subjects...
April 25, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28390605/association-of-sleep-disordered-breathing-symptoms-with-early-postoperative-analgesic-requirement-in-pediatric-ambulatory-surgical-patients
#7
Kamie Yang, Anne Baetzel, Wilson T Chimbira, Yuliya Yermolina, Paul I Reynolds, Olubukola O Nafiu
INTRODUCTION: Sleep disordered breathing (SDB) symptoms are associated with increased rates of opioid-induced respiratory depression as well as enhanced nociception. Consequently, practitioners often withhold or administer lower intraoperative doses of opioids out of concern for postoperative respiratory depression. Therefore, SDB may be a critical determinant of analgesic requirement in the post-anesthesia care unit (PACU). We investigated whether preoperative SDB classification was independently associated with need for PACU analgesic intervention in a cross-sectional sample of 985 children who underwent elective, painful ambulatory surgical procedures...
May 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28350962/multidimensional-hybridization-of-dark-surface-plasmons
#8
Andrew B Yankovich, Ruggero Verre, Erik Olsén, Anton E O Persson, Viet Trinh, Gudrun Dovner, Mikael Käll, Eva Olsson
Synthetic three-dimensional (3D) nanoarchitectures are providing more control over light-matter interactions and rapidly progressing photonic-based technology. These applications often utilize the strong synergy between electromagnetic fields and surface plasmons (SPs) in metallic nanostructures. However, many of the SP interactions hosted by complex 3D nanostructures are poorly understood because they involve dark hybridized states that are typically undetectable with far-field optical spectroscopy. Here, we use experimental and theoretical electron energy loss spectroscopy to elucidate dark SPs and their interactions in layered metal-insulator-metal disc nanostructures...
April 25, 2017: ACS Nano
https://www.readbyqxmd.com/read/28314215/a-metabolomic-approach-shows-sphingosine-1-phosphate-and-lysophospholipids-as-mediators-of-the-therapeutic-effect-of-liver-growth-factor-in-emphysema
#9
A Navarrete, F J Rupérez, T O Mendes, S Pérez-Rial, A Girón-Martínez, R Terrón-Expósito, J J Díaz-Gil, G Peces-Barba, C Barbas, A García
Tobacco smoke exposure is the principal cause of lung tissue destruction, which in turn results in emphysema that leads into shortness of breath. Liver growth factor (LGF, a cell and tissue regenerating factor with therapeutic activity in several organs) has antifibrotic and antioxidant properties that could be useful to promote lung tissue regenerating capacity in damaged lungs. The current study has examined differences in metabolite profiles (fingerprints) of plasma from mice (strain C57BL/6J, susceptible to develop emphysema) exposed to tobacco smoke during six months...
May 30, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28300372/lung-volume-reproducibility-under-abc-control-and-self-sustained-breath-holding
#10
Evangelia Kaza, Alex Dunlop, Rafal Panek, David J Collins, Matthew Orton, Richard Symonds-Tayler, Dualta McQuaid, Erica Scurr, Vibeke Hansen, Martin O Leach
An Active Breathing Coordinator (ABC) can be employed to induce breath-holds during CT imaging and radiotherapy of lung, breast and liver cancer, and recently during lung cancer MRI. The apparatus measures and controls respiratory volume, hence subject lung volume reproducibility is its principal measure of effectiveness. To assess ABC control quality, the intra-session reproducibility of ABC-induced lung volumes was evaluated and compared with that reached by applying the clinical standard of operator-guided self-sustained breath-holds on healthy volunteers during MRI...
March 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28267947/ambu%C3%A2-auragain%C3%A2-versus-lma-supreme%C3%A2-second-seal%C3%A2-a-randomised-controlled-trial-comparing-oropharyngeal-leak-pressures-and-gastric-drain-functionality-in-spontaneously-breathing-patients
#11
RANDOMIZED CONTROLLED TRIAL
I I Shariffuddin, W H Teoh, Ebk Tang, Nhm Hashim, P S Loh
Newer second generation supraglottic airway devices may perform differently in vivo due to material and design modifications. We compared performance characteristics of the Ambu® AuraGain™ and LMA Supreme™ Second Seal™ in 100 spontaneously breathing anaesthetised patients in this randomised controlled study. We studied oropharyngeal leak pressures (OLP) (primary outcome) and secondarily, ease of insertion, success rates, haemodynamic response, time to insertion, and complications of usage. We found no significant difference in OLP between the AuraGain versus the LMA Supreme, mean (standard deviation, SD) 24...
March 2017: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/28267272/effect-of-ventilator-mode-on-patient-ventilator-synchrony-and-work-of-breathing-in-neonatal-pigs
#12
Shayna M Wood, Tracy L Thurman, Shirley J Holt, Shasha Bai, Mark J Heulitt, Sherry E Courtney
BACKGROUND: Patient-ventilator asynchrony can result in increased work of breathing (WOB) and need for increased sedation, as well as respiratory muscle fatigue and prolonged mechanical ventilation. Different ventilator modes may result in varying degrees of asynchrony and WOB. OBJECTIVE: The objectives of this study were to assess the incidence of asynchrony and the effect of asynchrony on WOB in three modes of ventilation: pressure regulated volume control (PRVC), synchronized intermittent mandatory ventilation/volume control plus pressure support (SIMV/VC plus PS), and SIMV/PRVC plus PS...
March 7, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28263525/markers-of-nucleic-acids-and-proteins-oxidation-among-office-workers-exposed-to-air-pollutants-including-nano-tio2-particles
#13
Daniela Pelclova, Vladimir Zdimal, Petr Kacer, Stepanka Vlckova, Zdenka Fenclova, Tomas Navratil, Martin Komarc, Jaroslav Schwarz, Nadezda Zikova, Otakar Makes, Sergey Zakharov
OBJECTIVES: Experimental studies using nanoscale TiO2 have documented lung injury, inflammation, oxidative stress, and genotoxicity. Human health data are extremely scarce. METHODS: In exhaled breath condensate (EBC) and urine of 22 office employees occupationally exposed to TiO2 during their visit in the production workshops for average 14±9 min/day a panel of biomarkers of nucleic acids and proteins oxidation was studied, specifically 8-hydroxy-2-deoxyguanosine (8-OHdG), 8-hydroxyguanosine (8-OHG), 5-hydroxymethyl uracil (5-OHMeU), o-tyrosine (o-Tyr), 3-chlorotyrosine (3-ClTyr), and 3-nitrotyrosine (3-NOTyr)...
December 18, 2016: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28255599/a-novel-and-cost-effective-method-for-evaluating-cardiopulmonary-auscultation-skills-in-student-physical-therapists
#14
David O Sword, K Jackson Thomas, Holly H Wise, Deborah D Brown
Sophisticated high-fidelity human simulation (HFHS) manikins allow for practice of both evaluation and treatment techniques in a controlled environment in which real patients are not put at risk. However, due to high demand, access to HFHS by students has been very competitive and limited. In the present study, a basic CPR manikin with a speaker implanted in the chest cavity and internet access to a variety of heart and breath sounds was used. Students were evaluated on their ability to locate and identify auscultation sites and heart/breath sounds...
2017: Journal of Allied Health
https://www.readbyqxmd.com/read/28117475/educational-interventions-to-improve-inhaler-techniques-and-their-impact-on-asthma-and-copd-control-a-pilot-effectiveness-implementation-trial
#15
Tiago Maricoto, Sofia Madanelo, Luís Rodrigues, Gilberto Teixeira, Carla Valente, Lília Andrade, Alcina Saraiva
To assess the impact that educational interventions to improve inhaler techniques have on the clinical and functional control of asthma and COPD, we evaluated 44 participants before and after such an intervention. There was a significant decrease in the number of errors, and 20 patients (46%) significantly improved their technique regarding prior exhalation and breath hold. In the asthma group, there were significant improvements in the mean FEV1, FVC, and PEF (of 6.4%, 8.6%, and 8.3% respectively). Those improvements were accompanied by improvements in Control of Allergic Rhinitis and Asthma Test scores but not in Asthma Control Test scores...
November 2016: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/28117472/association-between-severe-asthma-and-changes-in-the-stomatognathic-system
#16
Mayra Carvalho-Oliveira, Cristina Salles, Regina Terse, Argemiro D'Oliveira
Objective: To describe orofacial muscle function in patients with severe asthma. Methods: This was a descriptive study comparing patients with severe controlled asthma (SCA) and severe uncontrolled asthma (SUA). We selected 160 patients, who completed a sociodemographic questionnaire and the 6-item Asthma Control Questionnaire (ACQ-6), as well as undergoing evaluation of orofacial muscle function. Results: Of the 160 patients evaluated, 126 (78...
November 2016: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/28048258/su-f-r-47-quantitative-shape-relationship-analysis-of-ptv-modification-for-critical-anatomy-sparing-and-its-impact-on-pathologic-response-for-neoadjuvant-stereotactic-radiotherapy-for-pancreatic-cancer
#17
Z Cheng, L Rosati, L Chen, S Robertson, J Moore, L Peng, O Mian, A Narang, A Hacker-Prietz, J Herman, T McNutt
PURPOSE: Stereotactic body radiation therapy (SBRT) may be used to increase surgery candidacy in borderline resectable (BRPC) and locally advanced (LAPC) pancreatic cancer. However, the planning target volume (PTV) may need to be limited to avoid toxicity when the gross tumor volume (GTV) is anatomically involved with surrounding critical structures. Our study aims to characterize the coverage of GTV and investigate the association between modified PTV and pathologic (pCR) or near pathologic (npCR) complete response rates determined from the surgical specimen...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046778/su-f-j-133-adaptive-radiation-therapy-with-a-four-dimensional-dose-calculation-algorithm-that-optimizes-dose-distribution-considering-breathing-motion
#18
I Ali, N Alsbou, O Algan, S Ahmad
PURPOSE: To model patient motion and produce four-dimensional (4D) optimized dose distributions that consider motion-artifacts in the dose calculation during the treatment planning process. METHODS: An algorithm for dose calculation is developed where patient motion is considered in dose calculation at the stage of the treatment planning. First, optimal dose distributions are calculated for the stationary target volume where the dose distributions are optimized considering intensity-modulated radiation therapy (IMRT)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27908570/sleep-related-disorders-in-latin-american-children-with-atopic-dermatitis-a-case-control-study
#19
MULTICENTER STUDY
M Urrutia-Pereira, D Solé, N A Rosario, H J C Neto, V Acosta, C F Almendarez, M M Avalos, H Badellino, F Berroa, M Álvarez-Castelló, A J Castillo, R L Castro-Almarales, M M De la Cruz, A M Cepeda, C Fernandez, M González-León, J Lozano-Saenz, C Sanchez-Silot, J C Sisul-Alvariza, M Valentin-Rostan, R O S Sarni
BACKGROUND: Atopic dermatitis (AD) has been associated with impairment of sleep. The aim of this study was to evaluate sleep disorders in AD Latin-American children (4-10 years) from nine countries, and in normal controls (C). METHODS: Parents from 454 C and 340 AD children from referral clinics answered the Children Sleep Habits Questionnaire (CSHQ), a one-week retrospective 33 questions survey under seven items (bedtime resistance, sleep duration, sleep anxiety, night awakening, parasomnias, sleep-disordered breathing and daytime sleepiness)...
May 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/27783807/cerebral-vasomotor-reactivity-assessment-using-transcranial-doppler-and-mri-with-apnea-test
#20
C R Campos Herrera, G C Beltramini, W M Avelar, F O Lima, L M Li
Differently from previous studies that used Transcranial Doppler (TCD) and functional MRI (fMRI) for cerebral vasomotor reactivity (CVR) assessment in patients with carotid stenosis (CS), we assessed CVR using an identical stimulus, the Breath-Holding Test (BHT). We included 15 patients with CS and 7 age-matched controls to verify whether fMRI responded differently to BHT between groups and to calculate the agreement rate between tests. For TCD, impaired CVR was defined when the mean percentage increase on middle cerebral artery velocities was ≤31% on 3 consecutive 30-s apnea intercalated by 4-min normal breathing intervals...
October 24, 2016: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
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